hi all,
I want to know the charactors of Temperature Sensors(thermocouples, rtd ...)
like mv generated per degree, maximum temperature.
I tried to search the web but i could not get the information. Please tell
me where i can get it.
thank you all!!!
regards
Hari
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Dear All!
I never used external ram. Please help me how to connect ram chip to 8051
and how to access it?
Thank You
Hari
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Hello all!
I have a project like this. A master modem and many slave modems. Master
modem will send an id and matched slave id modem will return some data.
The baud rate is fixed at 1200. I am planning to use Rockwell or Zilog
single chip modem ICs. And i am going to use 4 wire phone system. The tx
of master will be connected to rx of all slave modems. And if the id is
matched tx of the slave will be connected to master. Only the master can
initiate the communication.
The problem is this - Without handshaking is it possible to send data
through modem? Handshaking is not possiable because there are many slave
modem.
The id is unique for every modem. But i can't initiate dialing some number
and contact the slave. The id will be placed on the bus by master modem and
slave will recognise its id and return some data. (id matching is done by
89c55
eagerly waiting for your suggestions
thanks
regards
Chan J
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Thank you all for your valuable time and suggestions!
The number of modems interconnected will be around 25. Total distance is
nearly 200kms. We already have four wire private network.
The best solution came from Marcelo Puhl. Thank you once again Macelo Puhl.
He suggested that a BEL 202 like modem(data pump and no dialing, handshakes)
will solve my problem.
Thank you all again
regards
Chan J
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I'm Jordi, I'm a student from Barcelona. I have a lot of problems with =
the installation of the SDCC software version 2.1.9 or 2.2.0, and I =
would like some help from you. I follow the first steps of the =
installation but when I have to call the program configure somethings =
happens and the shell say "No such a file or directory".
What's happeninig?
May be the cygnus version is no all right? I have download two latest =
full versions!
Thanks in advance.

Perhaps you should do a "./configure" instead?
Otherwise, tell us what "somethings happens" means.
But, please, don't post in html. We are all grown up, so use it just for the
kids only.
----- Original Message -----
From: Jordi Rocasalbas
To: sdcc-user@...
Sent: Sunday, September 17, 2000 11:43 AM
Subject: [Sdcc-user] (no subject)
I'm Jordi, I'm a student from Barcelona. I have a lot of problems with the
installation of the SDCC software version 2.1.9 or 2.2.0, and I would like
some help from you. I follow the first steps of the installation but when I
have to call the program configure somethings happens and the shell say "No
such a file or directory".
What's happeninig?
May be the cygnus version is no all right? I have download two latest full
versions!
Thanks in advance.

I am trying to install sdcc-2.2.1-src.tar.gz on Caldera Open Linux 2.3.
When I run the configure script, I get the error message Cannot find
bison. Then it immediately dies. Where can I find bison to add to my
system?

Hi all!!!
I need to get data from computer at 2400 baud rate, 7 data bit in
asynchronous mode. And that data will be transmitted through air in
synchronous mode. The received data in synchronous mode should be send to
the computer at the remote end at 2400 baud rate, 7 data bit in aynchronous
mode.
I am going to use MX469 for VHF data transfer. So asynchronous to
synchronous convertion is required but I have no experience in it.
And I have used 300 to 19200 baud rate in 8 bit data mode but I don't know
how to use 7 bit data mode.
Please help me.
Thanks in advance
regards
Hari
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At 02:03 AM 2/16/01 -0000, hari haran wrote:
>Hi all!!!
>
>I need to get data from computer at 2400 baud rate, 7 data bit in
>asynchronous mode. And that data will be transmitted through air in
>synchronous mode. The received data in synchronous mode should be send to
>the computer at the remote end at 2400 baud rate, 7 data bit in aynchronous
>mode.
>
>I am going to use MX469 for VHF data transfer. So asynchronous to
>synchronous convertion is required but I have no experience in it.
>
>And I have used 300 to 19200 baud rate in 8 bit data mode but I don't know
>how to use 7 bit data mode.
>
>Please help me.
>
>Thanks in advance
>regards
>Hari
Hi,
Here it is my idea,I am not expert in communications.
First of all: what microcontroller do you use? if it is from 8051
series,there is no chance to use it "as is" for 7 data bits,since all 8051
serial modes implies 8 data bits; however, if you use an external (old,but
still available )8251A chip, you will be able to make asynchronous and
sychronous data transfers as you wish - perhaps with 2 chips - one for each
mode of transfer.
Or use 8 data bits from computer and the serial facilities of 8051.
Ioan Petrescu

Dear Sandeep,
i am using your SDCC51 Compiler ( i try it)
I made a small project and compiled it with SDCC -c and the name of the =
file.
Now i have got a file name.IHX
Is this the Hex-File which i can load with a programmer ?
I'm using a Eprom Simulator which could only load name.HEX files.
How can i convert your name.IHX to a name.HEX
It doesnt work by RENAME or COPY the name.IHX to name.HEX.
best regards
volker mueller

=
I have downloaded sdcc-2.2.1-win32-borland.zip but I have problem when =
I
have created one small program named test.c. I tried with sdcc test.c the=
n it
gives warning that ?Aslink-warning-undefined Global'-sdcc-external -start=
up'
referenced by module test.c'. So please helpme to solve the problem.One m=
ore
doubt is can I create code in sdcc for AT89s8252 using it's internal EEPR=
OM
because it always requires checks for writting cycle complete. So there i=
s
some change in normal xdata and this EEPROM hanling. I hope that You will=
help
me.
Thanks.
- Satyavijay Durgule.
From:-
Satyavijay J. Durgule.
Email Add:- durgule@...
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1

I'm trying to port some 8051 code originally written in assembly to C
using SDCC. I've been trying to pick my battles, reusing some of the
code a inline assembly, and rewriting other parts totally in C. My
question is can an inline assembly function (this one is a rather
complex ISR routine) call another function that has been written in C
using SDCC? I've tried something like this:
void myfunc(void)
{
//some code
}
void my_ISR(void)
{
_asm
call _myfunc
_endasm;
return;
}
Which results in this error: ".org in REL area or directive / mnemonic
error"
Thanks,
Aaron

Hi,
has anybody used SDCC and Infineon C509-L?
Is there a header file with all the register definitions around?
Rolf
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Hi Rolf
> Is there a header file with all the register definitions around?
There is no header file for the Infineon C509-L in the SDCC tree,
but there is a solution:
1. You can convert Keil-compatible header file to SDCC format with the Perl
script
keil2sdcc.pl (in the support/scripts directory)
2. Keil header files are available free from the Keil:
http://www.keil.com/download/c51.asp
Regards: Béla